Power light on, chimes, no video
Mac Pro A1289, Power light goes on, it chimes, screen stays black. Apple Studio monitor connected through DVI to ADC adapter A1006 - suspicious, will be checked soon. All fans inside don’t work, seems like nothing inside the tower generates any heat. Can’t decide whether to abandon this one and buy a newer one (very limited funds, close to none), or try to check power supply - how do I find out if it is bad? What else to check? All set up worked with no problems for about 5 years. Any ideas?